<header class="navbar navbar-fixed-top navbar-inverse">
     <div class="container">
        <%= link_to "sample app", root_path, id: "logo" %>
            <nav>
                <ul class="nav navbar-nav navbar-right">
                 <li><%= link_to "Home", root_path  %></li>
                 <li><%= link_to "Help", help_path  %></li>
                 <% if logged_in? %>
                <li><%= link_to "Users", users_path %></li>
                <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                Account <b class="caret"></b>
                </a>
                <ul class="dropdown-menu">
                <li><%= link_to "Profile", current_user %></li>
                <li><%= link_to "Settings", edit_user_path(current_user) %></li>
                <li class="divider"></li>
                <li>

                <%= link_to "Log out", logout_path, method: :delete %>
                </li>
                </ul>
                </li>
                <% else %>
                        <li><%= link_to "Log in", login_path %></li>
                <% end %>
                 </ul>                                                                                                                                        
           </nav>                                                                                                                                      </div>
</header>